Velinvar
镍铁钴钒合金
🗣️ 情景例句
Pete isn't home.
Pete不在家。
This round table weighs about forty-five pounds.
这张圆桌子重大约45磅。
The secret lies in the title of the book which he wrote about his early life, The story of my experiments with truth.
秘密在于他写的那本关于他自己早期生活的《我体验真理的故事》一书。